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NVIDIA NCA-AIIO Bundle

Exam Code: NCA-AIIO

Exam Name NCA - AI Infrastructure and Operations

Certification Provider: NVIDIA

Corresponding Certification: NCA-AIIO

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NVIDIA NCA-AIIO Practice Test 99

Question 980

At the Quayside customer service AI initiative, after onboarding a second AI project, a data center manager treats a high GPU utilization percentage as proof that a model job has efficient end-to-end throughput. Which maintenance practice best addresses the continuing risk?

  1. Review cooling and thermal alarms after increasing rack density
  2. Follow a documented drain and return-to-service checklist for each host update
  3. Track workload outcomes alongside device metrics for performance reporting
  4. Test management redundancy and access permissions during resilience exercises

Explanation

Correct Answer

C:

This practice addresses future change, not just today’s incident. The team should track workload outcomes alongside device metrics for performance reporting because device activity alone cannot reveal whether computation is useful or waiting on other pipeline stages. This directly addresses the reported issue at the Quayside customer service AI initiative.

Incorrect Answers

A:

This routine applies to gpu temperature monitoring, but it does not maintain the specific correction needed for the problem at the Quayside customer service AI initiative.

B:

That practice helps control a different risk: maintenance changes should not interrupt allocated accelerator jobs without controlled recovery. The recurring control here should be to track workload outcomes alongside device metrics for performance reporting. For the Quayside customer service AI initiative, the priority is to interpret GPU busy time alongside actual job throughput memory and communication metrics.

D:

This maintenance work is reasonable for out-of-band management resilience. The continuing exposure described here is that device activity alone cannot reveal whether computation is useful or waiting on other pipeline stages. For the Quayside customer service AI initiative, the priority is to interpret GPU busy time alongside actual job throughput memory and communication metrics.

Question 981

At the Cedarport manufacturing vision team, during a facility readiness audit, a GPU starts producing memory-related warnings but operators conclude it is healthy because the device is still visible. What should the team implement to resolve the issue?

  1. Use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe
  2. Specify supported GPU resource requests and target eligible accelerator nodes with the scheduler
  3. Configure scheduling priority fair-share or quota controls according to agreed organizational policy
  4. Inspect supported ECC and memory health indicators and follow fault triage procedures

Explanation

Correct Answer

D:

The relevant weakness is that a discoverable GPU can still have memory reliability incidents requiring intervention. The best correction is to inspect supported ECC and memory health indicators and follow fault triage procedures. Evidence of success would be that a controlled diagnostic review correctly categorizes the recorded GPU memory fault and service decision. This directly addresses the reported issue at the Cedarport manufacturing vision team.

Incorrect Answers

A:

The proposed action would be to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe, which is relevant to dcgm passive versus active diagnostics. It would leave the main reported problem unresolved. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

B:

The suggested implementation improves a different part of delivery. It does not directly address why a discoverable GPU can still have memory reliability incidents requiring intervention. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

C:

This is appropriate in cases involving batch queue fairness, but the facts here call for the team to inspect supported ECC and memory health indicators and follow fault triage procedures. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

Question 982

At the Cedarport manufacturing vision team, during a facility readiness audit, a GPU starts producing memory-related warnings but operators conclude it is healthy because the device is still visible. What underlying weakness best explains these results?

  1. A discoverable GPU can still have memory reliability incidents requiring intervention
  2. Device activity alone cannot reveal whether computation is useful or waiting on other pipeline stages
  3. Collecting alarms is insufficient when response ownership and escalation are undefined
  4. Uncontrolled container changes can alter numerical results and compatibility even when code stays fixed

Explanation

Correct Answer

A:

This is the most direct cause because a discoverable GPU can still have memory reliability incidents requiring intervention. The team can address it by choosing to inspect supported ECC and memory health indicators and follow fault triage procedures. This directly addresses the reported issue at the Cedarport manufacturing vision team.

Incorrect Answers

B:

That statement concerns gpu utilization interpretation; here the reported facts point to a different issue: a discoverable GPU can still have memory reliability incidents requiring intervention. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

C:

Collecting alarms is insufficient when response ownership and escalation are undefined. This can occur in other projects, but it is not the primary explanation at the Cedarport manufacturing vision team.

D:

This explanation belongs to container image reproducibility. The immediate weakness in the question is that a discoverable GPU can still have memory reliability incidents requiring intervention. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

Question 983

At the Cedarport manufacturing vision team, during a facility readiness audit, a GPU starts producing memory-related warnings but operators conclude it is healthy because the device is still visible. What evidence most directly demonstrates that the fix works?

  1. A representative stress run shows temperature within the supported range and no unexpected thermal throttling
  2. A controlled diagnostic review correctly categorizes the recorded GPU memory fault and service decision
  3. A safely simulated unhealthy node becomes unavailable for new jobs until checks pass
  4. A simulated device warning creates a case containing the correct GPU and host identifiers

Explanation

Correct Answer

B:

For the Cedarport manufacturing vision team, a controlled diagnostic review correctly categorizes the recorded GPU memory fault and service decision confirms the control rather than only documenting a proposed change. The corrective action is to inspect supported ECC and memory health indicators and follow fault triage procedures.

Incorrect Answers

A:

The proposed proof concerns a different control: a representative stress run shows temperature within the supported range and no unexpected thermal throttling. It would not establish that a controlled diagnostic review correctly categorizes the recorded GPU memory fault and service decision. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

C:

This test would not demonstrate that the identified weakness has been corrected. The necessary result is that a controlled diagnostic review correctly categorizes the recorded GPU memory fault and service decision. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

D:

The stated evidence does not directly validate the intended change to inspect supported ECC and memory health indicators and follow fault triage procedures. A suitable verification would establish that a controlled diagnostic review correctly categorizes the recorded GPU memory fault and service decision. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

Question 984

At the Cedarport manufacturing vision team, during a facility readiness audit, a GPU starts producing memory-related warnings but operators conclude it is healthy because the device is still visible. Which routine control would most effectively sustain the fix?

  1. Track recurring ECC and row-remapping health indicators by device
  2. Review approved power caps after facility and workload changes
  3. Reassess runtime isolation and device plug-in configuration after platform updates
  4. Require compatibility and rollback assessment before firmware rollouts

Explanation

Correct Answer

A:

After the immediate fix, the priority is to track recurring ECC and row-remapping health indicators by device. This reinforces the control against the original weakness: a discoverable GPU can still have memory reliability incidents requiring intervention. This directly addresses the reported issue at the Cedarport manufacturing vision team.

Incorrect Answers

B:

This does not address the failure mode over time. The better ongoing practice is to track recurring ECC and row-remapping health indicators by device. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

C:

This routine applies to container gpu access versus vm virtualization, but it does not maintain the specific correction needed for the problem at the Cedarport manufacturing vision team.

D:

That practice helps control a different risk: device firmware can affect stability and interaction with drivers and interconnects. The recurring control here should be to track recurring ECC and row-remapping health indicators by device. For the Cedarport manufacturing vision team, the priority is to inspect supported ECC and memory health indicators and follow fault triage procedures.

Question 985

At the Pinecrest logistics forecasting group, while testing inference service resilience, an operator interprets a passive DCGM health status as proof that every GPU can pass a sustained compute stress test. What is the best recommendation to correct this problem?

  1. Measure host-device transfer rate latency and PCIe-related health where supported
  2. Use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe
  3. Select hardware partitioning or time sharing according to isolation and capacity requirements
  4. Use eligible topology-aware scheduling or affinity for communication-intensive GPU tasks

Explanation

Correct Answer

B:

For the Pinecrest logistics forecasting group, use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe addresses the actual exposure: passive telemetry checks and active hardware workload tests provide different kinds of evidence. To verify the change, confirm that the investigation records both monitored health state and a properly scheduled active test result.

Incorrect Answers

A:

That change could address pcie transfer bottlenecks, but it does not resolve the specific weakness here: passive telemetry checks and active hardware workload tests provide different kinds of evidence. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

C:

The proposed action would be to select hardware partitioning or time sharing according to isolation and capacity requirements, which is relevant to mig versus time slicing. It would leave the main reported problem unresolved. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

D:

The suggested implementation improves a different part of delivery. It does not directly address why passive telemetry checks and active hardware workload tests provide different kinds of evidence. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

Question 986

At the Pinecrest logistics forecasting group, while testing inference service resilience, an operator interprets a passive DCGM health status as proof that every GPU can pass a sustained compute stress test. What is the most significant cause of this behavior?

  1. Power policy or supply constraints can affect accelerator clocks and sustained performance
  2. Placing synchronized workers across poor communication paths can increase collective bottlenecks
  3. Passive telemetry checks and active hardware workload tests provide different kinds of evidence
  4. Queued jobs can reflect policy or fragmentation as well as an actual shortage of compute

Explanation

Correct Answer

C:

This is the most direct cause because passive telemetry checks and active hardware workload tests provide different kinds of evidence. The team can address it by choosing to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe. This directly addresses the reported issue at the Pinecrest logistics forecasting group.

Incorrect Answers

A:

This explanation belongs to power consumption and limits. The immediate weakness in the question is that passive telemetry checks and active hardware workload tests provide different kinds of evidence. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

B:

Although placing synchronized workers across poor communication paths can increase collective bottlenecks, the situation does not describe that specific cause; it instead indicates that passive telemetry checks and active hardware workload tests provide different kinds of evidence. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

D:

That statement concerns capacity planning from demand; here the reported facts point to a different issue: passive telemetry checks and active hardware workload tests provide different kinds of evidence. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

Question 987

At the Pinecrest logistics forecasting group, while testing inference service resilience, an operator interprets a passive DCGM health status as proof that every GPU can pass a sustained compute stress test. Which evidence best supports closing this issue?

  1. A controlled kernel profile identifies memory traffic as the limiting factor and validates an improvement
  2. An induced supported monitoring condition appears on a fleet dashboard with the affected device
  3. A sample finished job produces the expected GPU-time usage under the correct project account
  4. The investigation records both monitored health state and a properly scheduled active test result

Explanation

Correct Answer

D:

For the Pinecrest logistics forecasting group, the investigation records both monitored health state and a properly scheduled active test result confirms the control rather than only documenting a proposed change. The corrective action is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

Incorrect Answers

A:

The stated evidence does not directly validate the intended change to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe. A suitable verification would establish that the investigation records both monitored health state and a properly scheduled active test result. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

B:

This result would test dcgm central monitoring use, not the failure described here. The more direct evidence is that the investigation records both monitored health state and a properly scheduled active test result. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

C:

The proposed proof concerns a different control: a sample finished job produces the expected GPU-time usage under the correct project account. It would not establish that the investigation records both monitored health state and a properly scheduled active test result. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

Question 988

At the Pinecrest logistics forecasting group, while testing inference service resilience, an operator interprets a passive DCGM health status as proof that every GPU can pass a sustained compute stress test. Which ongoing practice would best prevent a recurrence?

  1. Review cooling and thermal alarms after increasing rack density
  2. Track profile utilization and capacity headroom as tenant demand grows
  3. Review container image provenance and lifecycle during experiment promotion
  4. Coordinate disruptive diagnostics with the scheduler before isolating GPUs

Explanation

Correct Answer

D:

This is the relevant recurring safeguard: coordinate disruptive diagnostics with the scheduler before isolating GPUs. It is tied directly to the observed failure mode rather than a separate system concern. This directly addresses the reported issue at the Pinecrest logistics forecasting group.

Incorrect Answers

A:

That practice helps control a different risk: GPU thermal protection can reduce achievable performance when cooling is insufficient. The recurring control here should be to coordinate disruptive diagnostics with the scheduler before isolating GPUs. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

B:

The alternative suggests that the team track profile utilization and capacity headroom as tenant demand grows; it would not directly prevent the observed issue from returning. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

C:

This maintenance work is reasonable for container image reproducibility. The continuing exposure described here is that passive telemetry checks and active hardware workload tests provide different kinds of evidence. For the Pinecrest logistics forecasting group, the priority is to use passive DCGM health monitoring for observed incidents and active diagnostics when appropriate and safe.

Question 989

At the Dartwood fraud analytics department, after moving the service into a shared cluster, multiple small inference tenants need GPU acceleration but the design assigns a whole device to every virtual machine regardless of use. What should the DevOps team change first?

  1. Enforce suitable virtual GPU profile limits and admission planning for the tenant workload
  2. Evaluate supported NVIDIA vGPU profiles and licensing or platform requirements for sharing compatible GPUs
  3. Profile memory throughput and access behavior before optimizing the GPU kernel
  4. Route actionable infrastructure alerts to accountable operators with documented severity and escalation

Explanation

Correct Answer

B:

This is the appropriate response because virtual GPU technology can divide supported physical accelerator capacity among isolated virtual machines. Implementing the control means the team will evaluate supported NVIDIA vGPU profiles and licensing or platform requirements for sharing compatible GPUs, then test that each eligible guest receives its approved virtual GPU capacity and runs a compatible workload. This directly addresses the reported issue at the Dartwood fraud analytics department.

Incorrect Answers

A:

The suggested implementation improves a different part of delivery. It does not directly address why virtual GPU technology can divide supported physical accelerator capacity among isolated virtual machines. For the Dartwood fraud analytics department, the priority is to evaluate supported NVIDIA vGPU profiles and licensing or platform requirements for sharing compatible GPUs.

C:

That change could address memory bandwidth profiling, but it does not resolve the specific weakness here: virtual GPU technology can divide supported physical accelerator capacity among isolated virtual machines. For the Dartwood fraud analytics department, the priority is to evaluate supported NVIDIA vGPU profiles and licensing or platform requirements for sharing compatible GPUs.

D:

This option deals with a related concern where collecting alarms is insufficient when response ownership and escalation are undefined. The case at the Dartwood fraud analytics department instead requires the correction to evaluate supported NVIDIA vGPU profiles and licensing or platform requirements for sharing compatible GPUs.

Question 990

At the Dartwood fraud analytics department, after moving the service into a shared cluster, multiple small inference tenants need GPU acceleration but the design assigns a whole device to every virtual machine regardless of use. What is the primary reason this approach is unreliable?

  1. Virtual GPU technology can divide supported physical accelerator capacity among isolated virtual machines
  2. Sharing execution time is conceptually different from allocating partitioned GPU resources with separate memory boundaries
  3. Priority scheduling can waste substantial work when interrupted jobs lack usable restart state
  4. Without bounded resource consumption a single tenant can monopolize shared GPUs

Explanation

Correct Answer

A:

The situation indicates that virtual GPU technology can divide supported physical accelerator capacity among isolated virtual machines. The recommended response is to evaluate supported NVIDIA vGPU profiles and licensing or platform requirements for sharing compatible GPUs, with a follow-up check that each eligible guest receives its approved virtual GPU capacity and runs a compatible workload. This directly addresses the reported issue at the Dartwood fraud analytics department.

Incorrect Answers

B:

Sharing execution time is conceptually different from allocating partitioned GPU resources with separate memory boundaries. This can occur in other projects, but it is not the primary explanation at the Dartwood fraud analytics department.

C:

This explanation belongs to job preemption and checkpoints. The immediate weakness in the question is that virtual GPU technology can divide supported physical accelerator capacity among isolated virtual machines. For the Dartwood fraud analytics department, the priority is to evaluate supported NVIDIA vGPU profiles and licensing or platform requirements for sharing compatible GPUs.

D:

Although without bounded resource consumption a single tenant can monopolize shared GPUs, the situation does not describe that specific cause; it instead indicates that virtual GPU technology can divide supported physical accelerator capacity among isolated virtual machines. For the Dartwood fraud analytics department, the priority is to evaluate supported NVIDIA vGPU profiles and licensing or platform requirements for sharing compatible GPUs.